Just a simple flake to provide the CMS Kirby as a Nix module, including packages for the latest versions of Kirby 3, 4, and 5.

• Creates a system user and group for each instance
• Mounts the package from your nix-store into the root directory (e.g. /var/www/<name>/kirby) as read-only
• Preconfigures the services.nginx.virtualHosts.<hostName> entry for each instance
• Preconfigures and starts a dedicated PHP-FPM pool for each instance

Add Kirby to your flake inputs and ensure you're following your own nixpkgs.

# flake.nix
inputs = {
  nixpkgs.url = "github:NixOs/nixpkgs/<your-version>";
  kirby-cms = {
    url = "github:277292/kirby-flake";
    inputs.nixpkgs.follows = "nixpkgs";
  };
};

Load the module and overlay:

# flake.nix
outputs = {self, nixpkgs, kirby-cms, ...}: {
  nixosConfigurations.joes-server = nixpkgs.lib.nixosSystem {
    system = "x86_64-linux";
    modules = [
      ./configuration.nix

      # Kirby CMS module
      kirby-cms.nixosModules.kirby

      # Overlay to make Kirby packages available
      ({config, pkgs, ...}: {
        nixpkgs.overlays = [kirby-cms.overlays.kirby];

        # Explicitly allow Kirby, as it is unfree
        nixpkgs.config.allowUnfreePredicate = pkg: builtins.elem (lib.getName pkg) ["kirby"];
      })
    ];
  };
};

# configuration.nix
{config, pkgs, ...}: {
  # Ensure that a default package is set and/or specify one per instance.
  kirby-cms.default.package = pkgs.kirby4;
  kirby-cms.sites = {
    "getKirby.com" = {};
    example2 = {};
  };

  # Ensure that nginx is enabled.
  services.nginx.enable = true;
};

This will create two Kirby instances in /var/www/getKirby.com and /var/www/example2 using Kirby 4.

To disable SSL and ACME (e.g. for local development):

# configuration.nix
{config, lib, ...}: let cfg = config.kirby-cms; in {
  kirby-cms = {...};

  services.nginx.virtualHosts."${cfg.sites.<name>.hostName}" = {
    forceSSL = lib.mkForce false;
    enableACME = lib.mkForce false;
  };
}

kirby-cms.default.root = "/var/www"

kirby-cms.default.timezone = "UTC"

kirby-cms.default.package = null

kirby-cms.sites.<name>.enable = true

kirby-cms.sites.<name>.hostName = <name>

kirby-cms.sites.<name>.serverAliases = []

kirby-cms.sites.<name>.root = "${cfg.default.root}/<name>"

kirby-cms.sites.<name>.timezone = cfg.default.timezone

kirby-cms.sites.<name>.package = cfg.default.package

For more description and examples, see the flake.nix

nix run nixpkgs#nix-prefetch-github -- getKirby kirby --rev 5.1.0-rc.1

kirby-cms.default.packages = pkgs.kirby_fetch {
  version = "5.1.0-rc.1";
  rev = "29b38b4b6cf08ddcbff7b879297ee84060609916";
  sha256 = "sha256-yeHSKM+n77AfdaE0TdAgIZObs/rP59g+bdS4s5VeSfU=";
  phpPackage = pkgs.php84;
};

This flake is only a wrapper for integrating Kirby CMS into Nix.
I am not affiliated with the Kirby project, and this repository is not endorsed by or connected to the creators of Kirby. For licensing, usage terms, and commercial support, see getkirby.com.

Feel free to open an issue or submit a pull request if you encounter a problem or have an idea for improvement — contributions related to this flake are very welcome.